Enaminoketone sulfides



United States Patent 3,452,001 ENAMINOKETONE SULFIDES Gerhard H. Alt and Angelo John Speziale, Creve Coeur, Mo., assignors to Monsanto Company, St. Louis, Mo., a corporation of Delaware 3,452,001 Patented June 24, 1969 ice The new compounds are prepared from enaminoketones and aromatic sulfenyl halides by the following reaction:

No Drawing. Continuation-impart of application Ser. No. 5

303,943, Aug. 22, 1963. This application Aug. 12, 1966, R R R Y Ser. No. 571,988 b Int. Cl. C07c 149/42; (107d 41/04, 87/46 0=OCH= N SX US. Cl. 260-239 14 Claims R1 R3 R3 R1 R2 R3 5 I e/ e O: C= N O: HC=CNH X ABSTRACT OF THE DISCLOSURE Enaminoketone sulfides of the formula: 15 I I O=OC=CN 'sP11 Y R4 wherein R is selected from the class consisting of alkyl having one to four carbon atoms and radicals such that and Preparatlon: R1 15 alkyl havmg a f R and R together are alkylene having one to ten carbon mum 9 4 carbon atoms R2 13 hydrogen or alkyl havmg atoms providing a closed ring of four to eight carbon a maxumim of carbon atoms R1 and R2 i f atoms; wherein R is selected from the class consisting form a mug havmg 4 to 8 Inclusive R3 of hydrogen, alkyl having up to four carbon atoms, and and R are hydrogen, alkyl havmg a maximum 0f 4 radicals such that R; and R together are alkylene as bon atoms and together forming a divalent radical selected above defined; wherein R3 and R4 are Selected from the from the group cnS1s t1ng of alkylene R 0 R class consisting of hydrogen, alkyl having up to four carand halogen alkoxy alkyl mtro or bon atoms and radicals such that R and R together cyano, and y 1s an mteger from zero to three. form divalent structures selected from the class consistcompounds are Prepared by {eactmg the i ing of alkylene of from two to eight carbon atoms, spondmg c p-unsaturated ammo substituted ketone with in which the RS are alkylene of two to the appropnate. sulfenyl i These q i 5g9 six carbon atoms and R-S--R- in which the Rs are growth promotmg eflects e1} fed amma n alkylene of two to six carbon atoms; wherein Y is selected they q q anthelmmtlc and Provide a from the class consisting of chlorine, bromine, alkoxy source of asslmllable mtrogen' having up to four carbon atoms, alkyl having up to four carbon atoms, nitro and cyano; wherein y is an integer 40 from zero to three; and wherein X is selected from the This application is a continuation-in-part of application class consisting of chlorine and bromine. Ser. No. 303,943 filed Aug. 22, 1963, now abandoned, Preferred practice of the invention involves the reby Angelo John Speziale and Gerhard H. Alt. action:

This invention relates to a new class of chemical compounds having growth promoting efiects on animals fed thereon. The compounds which are readily prepared from H(CHI)m (Own-43 available precursors have anthelmintic activity and pro- (CH2) -C-(CH2).1 CH1 (N02) vide assimilable nitrogen. Both of these useful functions \(CHDX contribute to the value of the compounds as growth promoting components in animal feeds. CH

2)m HI) n- ((IJH2)D C (CH Q CH (CHDnH =C 2)x+ fl)p 2)u H: 019 S CH2 0: CH=C' $N (CH2) 2 H CH2 wherein m, n, p and q are integers from zero to two; wherein x is an integer from zero to five; and wherein y is an integer from zero to three.

The new compounds are prepared by contacting the reactants at temperatures between 50 C. and 180 C. The reaction is preferably conducted in an organic solvent solution which enables maintenance of the reaction temperature within the prescribed limits, for example at reflux temperature. By selection of the solvent, the concentration of the reactants in the solvent and the pressure, the reflux conditions can be established at any desired temperature. Suitable solvents are benzene, toluene, xylene, chlorobenzene, cyclopentane, n-hexane, cyclohexane, cyclooctane and any other inert water-immiscible organic solvent. Preferred operating conditions use temperatures from 100 C. to 150 C.

During the reaction the product and the by-product salt are precipitated. The crude product may be redissolved in hot methanol and crystallized by cooling. Further purification may be effected by converting the tertiary amine to an amine salt, for example for the perchlorate or the borofluoride.

Further details are set forth in the following examples.

EXAMPLE 1 Using the procedure of the preceding example, benzenesulfenyl chloride was reacted with 5,5-diethyl-3-N- piperidylcyclohex-Z-en-l-one. The product recovered from the reaction mixture was 2-(phenylthio)-5,5-diethyl- 3-N-piperidylcyclohex-2-en-l-one having the structure:

CHQCH: CHICH:

CHr-C-CH: GHQ-CH3 CH: S GHQ-CH) EXAMPLE 3 Using the above described procedure, 4-nitrobenzenesulfenyl chloride was reacted with 5,5-dimethyl-3-N- morpholinylcyclohex-Z-en-1-one to produce 2-(4-nitrophenylthio)-5,5-dimethyl-3'N morpholinylcyclohex 2- en-l-one.

EXAMPLE 4 A toluene solution of 2,4-dichlorobenzenesulfenyl bromide was mixed with 5-ethyl-3-N -dimethylarninocyclohex-2-en-1-one whereby a compound identified as that having the following structure was found:

a-CH: H H:

4 EXAMPLE 5 Using the procedure of Example 1, 4-toluenesulfenyl chloride was reacted with 4-N-isopropylaminopent-3-en 2-one whereby 3-(p-toluenethio)-4 -N isopropylaminopent-3-en-2-one was formed.

EXAMPLE 6 The reaction of p-cyanobenzenesulfenyl chloride with 3-N-hexamethyleniminopent-Z-en 1 one formed 2-4-cyanophenylthio)-3-N hexamethyleniminopent 2 en 1- one.

EXAMPLE 7 The above procedure was repeated except that 3,4,5- tribromobenzenesulfenyl bromide was reacted with 3-N- diethylaminocyclopent-Z-en-l-one. The product was identified as 2-(3,4,5-tribromophenylthio) 3 N diethylaminocyclopent-Z-en-l-one.

EXAMPLE 8 In a xylene solution, p-isopropylbenzenesulfenyl chloride was heated at reflux temperature with 3-N-pyrrolidylcyclooct-Z-en-llone. This reaction produced 2-(4-isopropylphenylthio -3-N-pyrro1idylcyclooct-2-en l-one.

- EXAMPLE 9 The procedure of Example 8 was repeated except benzenesulfenyl chloride was reacted with 4-N-piperidylbut- 3-en-2-one to form 3-(phenylthio)-4-N-piperidylbut-3-en- 2-one.

EXAMPLE 10 2-(4-rnethoxyphenylthio)-3-N-morpholycyclohept 2- -en-l-one was synthesized by the reaction of p-methoxybenzenesulfehyl chloride and 3-N-morpholycyclohept-2- en-l-one by the procedure of Example 1.

EXAMPLE 11 Using the procedure of Example 1, 4-nitrobenzenesulfenyl chloride was reacted with 5-N-di(n-propyl) aminohept-4-en-3-one whereby 4-(4-nitropheny1thio)-5- N-di-n-propy1aminohept-4-en-3-one was formed.

EXAMPLE 12 The reaction of benzenesulfenyl chloride with 3-N- hexamethyleniminocyclohex-Z-en-l-one was found to produce a compound identified as 2-phenylthio-3-N-hexamethyleniminocyclohex-Z-en-l-one having the structure EXAMPLE 13 The procedure of Example 3 was repeated except that 5,5-dimethyl-3-N-thiomorpholinyl was used in place of the morpholinyl derivative. The compound thereby p epared was 2-(4-nitrophenylthio)-5,5-dimethyl-3-N -thiomorpholinylcyclohex-Z-en-l-one.

Although the invention is described by the above specific examples it is not intended that the details thereof are limitations on the scope of the invention except to the extent incorporated in the following claims.

What is claimed is:

1. A compound of the structure wherein R is selected from the class consisting of alkyl having one to four carbon atoms, and radicals such that R and R together are alkylene having one to ten carbon atoms providing a closed ring of four to eight carbon atoms; wherein R is selected from the class consisting of hydrogen, alkyl having up to four carbon atoms and radicals such that R and R together are alkylene as above defined; wherein R and R are selected from the class consisting of hydrogen, alkyl having up to four carbon atoms and radicals such that R and R together are divalent structures of the class consisting of alkylene having from four to eight carbon atoms, -ROR- in which which R is alkylene having two carbon atoms, and RSR in which R is alkylene having two carbon atoms; wherein Y is selected from the class consisting of chlorine, bromine, alkoxy having up to four carbon atoms, alkyl having up to four carbon atoms, nitro, cyano, and amino and wherein y is an integer from zero to three.

2. A compound of the structure wherein m, 71, q and p are integers from zero to two; wherein y is an integer from zero to three; and wherein x is an integer from zero to five.

3. The compound of claim 2 wherein m, n, p, q and y are each one, wherein the nitro group is in the ortho position and wherein at is two.

4. The compound of claim 2 wherein m and n are each two, wherein p and q are each one, wherein x is three and wherein y is zero.

5. The compound of claim 1 wherein R and R together is -CH C(CH CH wherein y is one, wherein Y is nitro in the para position and wherein R and R together is CH CH OCH CH 6. The compound of claim 1 wherein R is methyl, R and R are each hydrogen, R is isopropyl, y is one and Y is methyl in the para position.

7. The compound of claim 1 wherein R and R together is CH C(CH -CH wherein R and R together is hexamethylene, wherein y is one and wherein Y is cyano in the para position.

8. The method of preparing phenylthioenaminoketones which comprises mixing, at a temperature in the range of 50 to 180 C., a compound of the structure R4 wherein R is selected from the class consisting of alkyl having one to four carbon atoms and radicals such that R and R together are alkylene having one to ten carbon atoms providing a closed ring of four to eight carbon atoms; wherein R is selected from the class consisting of hydrogen, alkyl having up to four carbon atoms, and radicals such that R and R together are alkylene as above defined; wherein R and R are selected from the class consisting of hydrogen, alkyl having up to four carbon atoms and radicals such that R and R together form divalent structures selected from the class consisting of alkylene of from four to eight carbon atoms,

in which the Rs are alkylene having two carbon atoms, and RSR in which the Rs are alkylene having two carbon atoms; and a compound of the structure X l s wherein X is selected from the class consisting of chlorine and bromine, wherein Y is selected from the class consisting of chlorine, bromine, alkoxy of up to four carbon atoms, alkyl of up to four carbon atoms, nitro and cyano, and wherein y is an integer from zero to three.

9. A method of preparing a phenylthioenaminoketone which comprises mixing a compound of the structure wherein m, n, p and q are integers from zero to two and x 1s an integer from zero to four with a compound of the structure wherein y is an integer from zero to three and heating the mixture at reflux temperature in an inert organic solvent boiling between 50 C. and C.

10. The method of claim 8 wherein 2-nitrobenzenesulfenyl chloride is reacted with 5,5-dimethyl-3-N-pyrrolidylcyclohex-Z-en-l-one.

11. The method of claim 8 wherein benzenesulfenyl chloride is reacted with 5,5-diethyl-3 N piperidylcyclohex-2-en-1-one.

12. The method of claim 8 wherein 4-nitrobenzene-sulfenyl chloride is reacted with 5,5-dimethyl-3-N-morpholinylcyclohex-Z-en-1-one.

13. The method of claim 8 wherein 4-toluenesulfenyl chloride is reacted with 4-N-isopropylaminopent-3-en-2- one.

14. The method of claim 8 wherein p-cyanobenzenesulfenyl chloride is reacted with 3-N-hexamethyleniminopent-Z-en-l-one.

No references cited.

ALTON D. ROLLINS, Primary Examiner.

US. Cl. X.R. 

